DND Voicemail Behavior

Currently, if DND is set (at the server side) then the Busy Voicemail greeting is played. However, most of my users want to use the DND to send the caller to the Unavailable greeting. Is there a simple way to change the current DND behavior?

I have the same request from 2008…

“Currently, if DND is set (at the server side) then the Busy Voicemail greeting is played. However, most of my users want to use the DND to send the caller to the Unavailable greeting. Is there a simple way to change the current DND behavior?”